Owosso weather by month
What a typical year looks like in Owosso, Michigan: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at OWOSSO WWTP, 2 km from Owosso; records cover 1896–2026.
The year at a glance
- Precipitation a year
- 34.5 in876 mm
- Snow a year
- 38 in97 cm
- Last spring freeze
- Apr 30
- First fall freeze
- Oct 11
- Heating degree days
- 6,867
- Cooling degree days
- 578
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −5°−21° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
Owosso in January
Highs average 30°−1° and lows 16°−9°, with 2.1 in53 mm of precipitation and 12 in31 cm of snow in a typical January.
- Record high
- 65°18° (1950)
- Record low
- −22°−30° (1907)
- Heating degree days
- 1302
- Cooling degree days
- 0
Owosso in February
Highs average 33°1° and lows 16°−9°, with 1.8 in46 mm of precipitation and 9 in23 cm of snow in a typical February.
- Record high
- 74°23° (2024)
- Record low
- −26°−32° (1918)
- Heating degree days
- 1128
- Cooling degree days
- 0
Owosso in March
Highs average 43°6° and lows 24°−5°, with 2 in50 mm of precipitation and 4 in10 cm of snow in a typical March.
- Record high
- 87°31° (2012)
- Record low
- −15°−26° (2014)
- Heating degree days
- 976
- Cooling degree days
- 1
Owosso in April
Highs average 57°14° and lows 35°1°, with 3.6 in92 mm of precipitation and 0.8 in2 cm of snow in a typical April.
- Record high
- 88°31° (1915)
- Record low
- 3°−16° (1982)
- Heating degree days
- 588
- Cooling degree days
- 3
Owosso in May
Highs average 69°20° and lows 46°8°, with 4.2 in105 mm of precipitation in a typical May.
- Record high
- 95°35° (1900)
- Record low
- 20°−7° (1909)
- Heating degree days
- 270
- Cooling degree days
- 36
Owosso in June
Highs average 78°26° and lows 56°13°, with 3.5 in89 mm of precipitation in a typical June.
- Record high
- 102°39° (1934)
- Record low
- 31°−1° (1913)
- Heating degree days
- 59
- Cooling degree days
- 120
Owosso in July
Highs average 82°28° and lows 60°15°, with 3.6 in90 mm of precipitation in a typical July.
- Record high
- 105°41° (1934)
- Record low
- 40°4° (1906)
- Heating degree days
- 14
- Cooling degree days
- 194
Owosso in August
Highs average 80°27° and lows 59°15°, with 3.3 in85 mm of precipitation in a typical August.
- Record high
- 103°39° (1918)
- Record low
- 34°1° (1934)
- Heating degree days
- 24
- Cooling degree days
- 156
Owosso in September
Highs average 74°23° and lows 51°11°, with 2.8 in70 mm of precipitation in a typical September.
- Record high
- 103°39° (1933)
- Record low
- 26°−3° (1991)
- Heating degree days
- 144
- Cooling degree days
- 61
Owosso in OctoberThis month
Highs average 61°16° and lows 40°4°, with 3.2 in82 mm of precipitation and 0.2 in0.5 cm of snow in a typical October.
- Record high
- 90°32° (1900)
- Record low
- 15°−9° (1906)
- Heating degree days
- 462
- Cooling degree days
- 7
Owosso in November
Highs average 47°8° and lows 31°−1°, with 2.4 in61 mm of precipitation and 2.1 in5.3 cm of snow in a typical November.
- Record high
- 79°26° (1950)
- Record low
- −5°−21° (1949)
- Heating degree days
- 784
- Cooling degree days
- 0
Owosso in December
Highs average 36°2° and lows 23°−5°, with 2 in52 mm of precipitation and 10 in25 cm of snow in a typical December.
- Record high
- 69°21° (2001)
- Record low
- −14°−26° (1914)
- Heating degree days
- 1116
- Cooling degree days
- 0